Overview
The Amperex 6GB5 / EL500 is a beam power tetrode vacuum tube designed for use as a line output tube in television receivers and audio amplifier circuits. This beam pentode is intended for use as line output tube in television receivers. Amperex tubes are highly regarded by vintage electronics enthusiasts and audio restoration specialists for their superior sound quality and reliable construction. This unit arrives in new in box condition, making it ideal for restoration projects requiring authentic original components.
Key Features
- Beam power tetrode configuration for robust output stage performance
- Direct equivalent to EL500 European designation
- Suitable for audio amplifiers, vintage radios, and television receiver circuits
- Authentic Amperex manufacturing with verified provenance
- New in Box condition ensures long shelf life and reliable operation
Technical Specifications
The 6GB5 / EL500 shares electrical characteristics common to this tube family. Specific plate voltage and current ratings vary by application circuit. Users should consult the original equipment schematic and cross-reference with the tube manufacturer’s published data sheet before installation to ensure proper biasing and operating parameters.
Typical Applications
- Audio power amplifier output stage
- Vintage high-fidelity equipment restoration
- Television receiver line output circuits
- Tube amplifier restoration and repair
- Audio enthusiast collection and experimentation
Compatibility & Replacements
Compatible With
- Tube amplifiers rated for 6GB5 or EL500 vacuum tubes
- Vintage audio equipment requiring beam power tetrode output stages
- Classic television receiver circuits designed for this tube family
- High-fidelity amplifier systems from the 1950s–1970s era
Replaces / Drop-In Replacement For
This tube replaces 6GB5 or EL504, EL500 tube types. Verify compatibility with your system integrator before ordering, as application circuits and biasing requirements may vary by equipment manufacturer.
Works With
- Audio amplifier circuits designed for EL500 or 6GB5 tubes
- Tube testers with appropriate curve and bias settings
- Vintage equipment using RCA, Sylvania, or Magnavox branded versions of this tube
- Restoration projects requiring period-correct original components







